EP 3252716 A1 20171206 - DEPTH MAP FROM MULTI-FOCAL PLANE IMAGES
Title (en)
DEPTH MAP FROM MULTI-FOCAL PLANE IMAGES
Title (de)
TIEFENKARTE AUS BILDERN MIT MULTIFOKALER EBENE
Title (fr)
CARTE DE PROFONDEUR À PARTIR D'IMAGES À PLAN MULTIFOCAL
Publication
Application
Priority
US 201615173011 A 20160603
Abstract (en)
A system for generating a depth map for an object in a three-dimensional (3D) scene includes an image capture sensor and a processor. The image capture sensor is configured to capture a plurality of images of the object at a plurality of different focal planes. The processor is configured to calculate a plurality of variance values for a plurality of image locations for each image captured by the image capture sensor. The processor is also configured to determine a peak variance value for the plurality of image locations based on the calculated variance values associated with the same image location for each of the plurality of images of the object at the plurality of different focal planes. The processor is also configured to generate the depth map for the object based on the determined peak variance value for each image location and the plurality of different focal planes.
IPC 8 full level
G06T 7/571 (2017.01); G06T 7/521 (2017.01)
CPC (source: EP US)
G02B 3/14 (2013.01 - US); G06T 7/521 (2017.01 - US); G06T 7/571 (2017.01 - EP US); H04N 23/00 (2023.01 - US); H04N 23/958 (2023.01 - EP); H04N 25/71 (2023.01 - US); G02B 3/14 (2013.01 - EP); G06T 2207/10028 (2013.01 - US); G06T 2207/10148 (2013.01 - EP US); G06T 2207/20024 (2013.01 - US)
Citation (search report)
- [X] YI-CHE CHEN ET AL: "Depth map generation based on depth from focus", ELECTRONIC DEVICES, SYSTEMS AND APPLICATIONS (ICEDSA), 2010 INTL CONF ON, IEEE, PISCATAWAY, NJ, USA, 11 April 2010 (2010-04-11), pages 59 - 63, XP031703836, ISBN: 978-1-4244-6629-0
- [X] BASTIEN BILLIOT ET AL: "3D Image Acquisition System Based on Shape from Focus Technique", SENSORS, vol. 13, no. 4, 15 April 2013 (2013-04-15), pages 5040 - 5053, XP055397332, DOI: 10.3390/s130405040
- [A] PAOLO FAVARO: "Depth from focus/defocus", 25 January 2002 (2002-01-25), http://homepages.inf.ed.ac.uk:80/rbf/CVonline/LOCAL_COPIES/FAVARO1/dfdtutorial.html, XP055397952, Retrieved from the Internet <URL:https://web.archive.org/web/20060111155034/http://homepages.inf.ed.ac.uk:80/rbf/CVonline/LOCAL_COPIES/FAVARO1/dfdtutorial.html> [retrieved on 20170810]
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3252716 A1 20171206; EP 3252716 B1 20220316; JP 2017223667 A 20171221; US 10097777 B2 20181009; US 2017353682 A1 20171207
DOCDB simple family (application)
EP 17173832 A 20170531; JP 2017107927 A 20170531; US 201615173011 A 20160603